Cass County, MO
The federal environmental record for Cass County (population 111,732): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
0
Superfund NPL sites
3
federal cleanup sites
6
PFAS-detecting water systems
9
TRI facilities
7
open tank releases
Drinking water: PFAS testing
Public water systems serving Cass with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.
| System | Highest results | Reading |
|---|---|---|
| BELTON PWS MO1010061 | PFBA: 5.4 ng/L | detected |
| KANSAS CITY PWS MO1010415 | PFBA: 5.6 ng/L | detected |
| PECULIAR PWS MO1010633 | PFBA: 8.3 ng/L | detected |
| PLEASANT HILL PWS MO1010649 | PFBA: 6.4 ng/L | detected |
| CASS COUNTY PWSD 7 MO1024111 | PFPeA: 3.4 ng/L | detected |
| CASS COUNTY PWSD 2 MO1024114 | PFBA: 6.3 ng/L | detected |
On a system with detections? Testing and treatment options
Facilities reporting toxic releases (2024)
9 facilities in Cass filed TRI reports for 2024, totalling 14k lb released.
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| ACCI SPECIALTY MATERIALS LLC | HARRISONVILLE | Dichloromethane, Dimethylamine | 9k lb |
| IFIL USA | HARRISONVILLE | Diisocyanates | 4k lb |
| ROM | BELTON | Manganese, Copper | 617 lb |
| CHURCH & DWIGHT CO. INC. | HARRISONVILLE | Nitrilotriacetic acid trisodium salt, 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran | 7 lb |
| WHISTLE REDI-MIX INC-PLEASANT HILL SITE | PLEASANT HILL | Lead compounds, Mercury compounds | 0 lb |
| MMT TECHNOLOGY INC | GARDEN CITY | - | 0 lb |
| HIXSON LUMBER CO LLC | PLEASANT HILL | - | 0 lb |
| MATERIALS PACKAGING CORP | HARRISONVILLE | Lead, Mercury And Mercury Compounds | 0 lb |
| UFP HARRISONVILLE LLC | HARRISONVILLE | - | 0 lb |
Underground fuel tanks
EPA's UST Finder records 150 tank facilities in Cass: 138 tanks in service and 289 closed. 71 fuel releases are on record, of which 7 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Cass as Zone 1, the highest predicted indoor radon levels (over 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Cass, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BELTON (EX) COMM FACILITY BELTON
- NIKE (EX) BATTERY 30 L - KANSAS CITYPLEASANT HILL
- RICHARDS GEBAUR AIR FORCE BASEBELTON